Special Lines Review

Special Lines Review

Vertical LInes go straight up and down.

vertical lines have undefined slopes

x = ? makes a vertical line

x = ? crosses through x-axis

Horizontal lines go straight left and right

Horizontal lines have zero slope

y = ? makes a horizontal line

y = crosses through y-axis

Multiple Choice

Is it vertical or horizontal?

 $y=5$  

• Vertical

• Horizontal

Multiple Choice

Is it vertical or horizontal?

 $x=3$  

• Vertical

• Horizontal

Multiple Choice

What is the equation of the line?

• y = 1

• x = 1

Multiple Choice

What is the equation of the line?

• y = 1

• x = 1

Multiple Choice

What is the slope of the line?

 $y=-3$  

• -3

• 0

• 1

• undefined

Multiple Choice

What is the slope of the line?

 $x=-4$  

• -4

• 0

• 1

• undefined

Multiple Choice

What is the slope of the line?

• 1

• 0

• -1

• undefined

Multiple Choice

What is the slope of the line?

• 1

• 0

• -1

• undefined

Slope - Intercept form y=mx+b

1. Find y-intercept

2. Find Slope

3. Put into form

Multiple Choice

What is the y-intercept?

• 1

• -1

• 2

• -2

Multiple Choice

What is the slope?

Count up or down first

Count from left dot

• 1/2

• 2/1

• -1/2

• -2/1

Multiple Choice

Put into y=mx+b

y-int = -1

slope = 1/2

• y=1/2x+1

• y=1/2x-1

• y=-1/2x+1

• y=-1/2x-1

Multiple Choice

What is the graph of the line

• A

• B

• C

• D

Multiple Choice

What is the equation of the line?

• A

• B

• C

• D

Poll

Are you getting better at lines?

• Yes

• No

Poll

Are you tired of lines?

• Yes

• No